View at Official ubuntu advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2018-8780 medium priority: Ubuntu including 4 source packages (ruby1.9.1, ruby2.0, ruby2.3, ruby2.5), 20 status rows across 5 suites (artful, bionic, trusty, upstream, xenial): DNE 11, released 5, needs-triage 4.
In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, the Dir.open, Dir.new, Dir.entries and Dir.empty? methods do not check NULL characters. When using the corresponding method, unintentional directory traversal may be performed.